The Western Sydney term coined to describe a student who truants his final term of school thus making one unable to graduate, also used to indicate a ridiculously extreme form of sloth and laziness.

Brief Background History: Circa 2009
Marvin was a student attending a school in Sydney's Western Suburbs who was a legend in his own right, will be sorely missed.
Scenario Example of "chucking a marvin"

A: Hey, graduations in a few months...

M: I think I'm going to skip tomorrow

nine weeks later

M: Back Dude..

A: You can't graduate anymore man

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example 2

A: Hey man pass those chips right next to you

M: nah man i can't be bothered

A: Dude don't chuck a marvin!
by beached_aaz August 3, 2009
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